High grade hot rolled narrow strip steel
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 300 m.t.
- Supply Capability:
- 5000 m.t./month
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Definition
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Strip steel
The strip generally supplied in rolls, has the advantages of high size precision,good surface quality, easy processing, material saving etc.. With the same steel plate, strip by strip material is divided into ordinary and high quality strip steel two categories; according to the manufacturing method of hot rolled strip,cold rolled strip two.
2 scope of application
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Steel is widely used in the production of welded steel pipe as blank, cold-formed steel, manufacturing bicycle frame, wheels, clamps, washer, spring film,saw blade, metal products and blade etc..
Cold-formed steel
In broadband steel
The 3 process
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The production process of cold rolled strip steel is generally: picklinglubrication, rolling, process, anneal and flat, cutting, packaging.
Cold rolled strip steel pickling rolling process: -- -- -- -- the size of synchronousrolling annealing lubricating antirust oil length -- -- -- flat polished package
Hot strip rolling heating furnace dephosphorization machine: -- -- -- --phosphorus removal roughing mill machine finishing mill surface quality inspection instrument -- -- -- -- layer cold coiler bundling machine -- number spraying machine -- volume base slab
The production process of hot rolling strip steel: first in the heating furnace of increasing the temperature to the desired temperature of rolling, and then oxidized to tin machine generated on the slab roller into the roughingphosphorus removal treatment, then enter the width and thickness of striproughing rolling unit rolling, iron oxide by roller conveying to phosphorus on the strip surface finishing machine produce processing, enter the width and thickness of strip finishing rolling unit for more precision rolling, strip by rollerby layer on the surface temperature of cold roll strictly control take before and after, enters the coiler for steel coil finally bundling, spraying number into thevolume storage packaging.
4 Market
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In May 20th Shengfang steel prices down. According to the data Chineseindustry insight network show: Hebei forward, Sheng Bao, Bazhou Xinya, the new crown made 2.5* (232-355) steel price is 3400 yuan (ton price, the same below), down 50 yuan more than last Friday.
Influenced by Tangshan last week, small narrow billet prices, Saturday (18 days) in Shengfang area with steel mills have lowered the ex factory price. The price decline, turnover performance in general, opened today manufacturersoffer temporary stability. In addition, the Tangshan area steel prices also have lowered, 355mm strip retail pricing million in 3320-3350, with the local price difference between 50-80 yuan, relatively reasonable.
Today Tangshan small narrow band market prices show small to rise, and the futures, electronic disk also rise, but the rise of strength are insufficient. At present, the overall trend of steel spot market downturn, but the steel market is restricted by the supply pressure, the market price is the emergence of the continuing rise in prices. And will soon enter the consumer off-season, terminaldemand release rate has slowed down, expected short-term local steel marketprice is still dominated by the shock consolidation.
5 Classification
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Hot rolled strip
1, hot rolled ordinary carbon structural steel (GB3524-83)
Strip steel
Hot rolled plain carbon steel with ordinary carbon structural steel as material,made of 1.80-6.00mm hot rolled strip thickness, width of 50-1200mm.
(1) the main purposes
Mainly used for cold rolling billet, cold-formed steel billet, welded steel pipebillet and bicycle, hardware products manufacturing.
(2) grade and chemical composition of materials
Standards and grades
National standard
Quite foreign standard
Function and use
Material categories
The implementation of standards
Grade
Standard No.
Grade
Suitable for manufacturing of cold forming parts
Low carbon steel coil
Q/BQB302
SPHC
JISG3131
SPHC
SPHD
SPHD
SPHE
SPHE
SAE1006/SAE1008
SAE1006/SAE1008
XG180IF/200IF
XG180IF/200IF
Steel for general structure
GB/T912-1989
Q195
JISG3101
SS330
For general construction of buildings, bridges, ships, vehicles, etc.
Q235B
SS400
SS400
SS490
ASTMA36
SS540
(3) the mechanical properties
The nominal thickness
The yield strength (Mpa)
Tensile strength (Mpa)
Elongation of A50mm%
The 180 degree bend test
>1.5-2.5
Less than or equal to 290
More than 310
More than 38
D=0a
>2.5-3.0
Less than or equal to 290
More than 300
More than 38
D=0a
>3.0-4.0
Less than or equal to 290
More than 300
More than 40
D=1/2a
Use of hot-rolled steel 2, bicycle (GB3645-89)
Bicycle for hot rolled wide strip steel in carbon steel and low alloy steel asmaterial, made of 1.8-8.0mm strip steel thickness after hot rolling, the strip width can reach 1300mm.
(1) the main uses special for bicycle manufacturing materials.
(2) grade and chemical composition of materials
(3) the mechanical properties
(4) strip (board) size
The thickness of the steel plate strip thickness 1.8-6.0mm, 7, 8.0mm.
Strip (board) width: rimming steel is less than or equal to 1300mm (a=2.0-6.0)
Killed steel is less than or equal to 1250mm (a = 3)
Less than or equal to 1300mm (a = 3)
The length of the plate, steel coil diameter 760mm, 4-6m plate.
Hot rolled strip with 3, bicycle (GB3647-89)
(1) the main purposes
Bicycle designed for the manufacture of hot rolled strip of bicycle and the chain, also can be used for cold rolled and welded pipe blank blank.
(2) grade and chemical composition of materials
(3) the mechanical properties
(4) the specification of strip
Bicycles are generally used for hot rolled strip steel strip thickness of 1.8-8.0mm, width of 60-250mm.
Hot rolled strip with 4, pressure vessel (GB5681-85)
(1) the main purposes
Used in the manufacture of low pressure vessel.
(2) grade and chemical composition of materials
(3) the mechanical properties
(4) the specification of strip and production unit
Pressure vessel is generally used for hot rolled strip steel strip thickness of 4mm, width of 80mm double length, length of not less than 70m (volume).
Cold rolling of strip
(1) the main purposes
Cold-rolled carbon steel for the manufacture of bicycles, sewing machines,agricultural machinery and other accessories and hardware products.
(2) grade and chemical composition of materials
Grade
Supply standard
Supply size
Use
SPCC
Q195
Q235-B
GB/T912
GB/T3274
Width
Mm
Thickness
Mm
Widely used in engineering machinery, transportation machinery, construction machinery, hoisting machinery。
- Q:How are steel strips used in the production of pipes and tubes?
- The production of pipes and tubes relies heavily on steel strips, which serve as a vital component. These strips act as the raw material and undergo various manufacturing processes to achieve the desired shape and size. To begin with, the steel strips are unwound and introduced into a forming machine, where they undergo a continuous bending process. This process entails passing the strips through a sequence of rollers, gradually shaping them into a cylindrical form. By adjusting the distance between the rollers, control can be exerted over the diameter and thickness of the pipes or tubes. Once the strips have taken on the desired shape, they are joined together along their length to create a seamless or welded connection. For seamless pipes, the ends of the strip are subjected to high-frequency induction welding or electric resistance welding techniques, causing them to be heated and fused together. Conversely, welded pipes are formed by welding the edges of the strip using various methods, such as high-frequency induction welding, electric arc welding, or submerged arc welding. Following the welding process, additional steps may be taken to enhance the properties of the pipes or tubes. These steps can include heat treatment, surface treatment, or sizing, all of which are carried out to meet specific requirements, such as strength, durability, corrosion resistance, or aesthetic appearance. In summary, steel strips play a crucial role in the production of pipes and tubes by serving as the foundational material that is shaped and welded to achieve the desired shape and size. The versatility and strength of steel make it an ideal choice for pipes and tubes in a wide range of industries, including construction, infrastructure, oil and gas, automotive, and manufacturing.
- Q:How are steel strips processed for surface leveling?
- Steel strips are processed for surface leveling through a series of mechanical operations, such as rolling, stretching, and annealing. These processes help to remove any imperfections or unevenness on the surface, ensuring a smooth and even finish.
- Q:How do steel strips respond to different forming processes?
- Various factors, such as the composition and properties of the steel, the type of forming process utilized, and the desired shape and characteristics of the final product, influence the response of steel strips to different forming processes. One widely employed forming process for steel strips is cold rolling. This method involves passing the steel strip through a sequence of rollers to decrease its thickness and enhance its surface finish. Cold rolling can augment the strength and hardness of the steel, rendering it suitable for applications that demand high strength and durability. Furthermore, cold rolling can improve the dimensional accuracy and flatness of the steel strip. Another commonly employed forming process is hot rolling. In this process, the steel strip is heated above its recrystallization temperature and passed through a series of rollers. Hot rolling enhances the formability of the steel strip, enabling it to be shaped into intricate forms. Moreover, it improves the grain structure of the steel, resulting in enhanced mechanical properties. Steel strips can also undergo other forming processes, including bending, deep drawing, and stamping. Bending involves applying force to the steel strip to achieve the desired shape. Deep drawing, on the other hand, involves forming a flat steel strip into a three-dimensional shape using a die and punch. Stamping involves pressing a steel strip into a die to create intricate shapes and patterns. In conclusion, steel strips possess versatility and respond favorably to various forming processes. The specific response of a steel strip to a particular forming process relies on factors such as the steel's composition, thickness, and the parameters employed during the process. By selecting the appropriate forming process, manufacturers can achieve the desired shape, mechanical properties, and surface finish for the steel strip.
- Q:How are steel strips used in the medical industry?
- Steel strips are used in the medical industry for a variety of purposes, including the manufacturing of surgical instruments and implants. They are also used in medical devices such as catheters and stents. Additionally, steel strips can be used for wound closure and as a component in medical packaging.
- Q:How are steel strips processed for insulation?
- To ensure the utmost effectiveness and durability, steel strips undergo a series of steps to be insulated. Initially, the steel strips are thoroughly cleaned and degreased to eliminate any impurities or contaminants that might hinder the insulation process. This is typically accomplished through a combination of chemical baths and mechanical cleaning techniques. Once the steel strips are free of dirt, they are coated with a layer of insulation material. This can be achieved using various methods, such as immersing the steel strips in a bath of molten zinc (known as hot-dip galvanizing) or applying a layer of epoxy or polyurethane coating. These insulation materials act as a shield against heat, moisture, and external elements, preventing corrosion and enhancing the thermal efficiency of the steel strips. Depending on the specific requirements, further processing may be conducted on the steel strips after the initial insulation coating. This may involve adding additional layers of insulation material, such as polyethylene or PVC, to provide extra protection and insulation properties. The steel strips may also undergo heat treatment processes to improve their mechanical properties and resistance to wear and tear. Lastly, before being packaged and shipped to their intended destination, the insulated steel strips undergo a quality assurance inspection. This includes checking for proper insulation coverage, thickness, adhesion, and overall coating integrity. Various testing methods, such as visual inspection, adhesion tests, and thickness measurements, are utilized to ensure that the insulation meets the required standards and specifications. In conclusion, the insulation process for steel strips encompasses cleaning, insulation material coating, potential additional layers, heat treatment, and quality inspection. These processes are vital in guaranteeing the effective insulation and protection of the steel strips, making them suitable for various applications in industries such as construction, automotive, and electrical.
- Q:How are steel strips processed for surface shearing?
- Steel strips are processed for surface shearing by passing them through a shearing machine that cuts off the top layer of the strip, resulting in a smooth and clean surface finish.
- Q:How are steel strips inspected for quality and defects?
- Steel strips are inspected for quality and defects through a comprehensive process that involves various techniques and tools. One of the most common methods is visual inspection, where trained personnel carefully examine the steel strips for any visible defects such as surface imperfections, scratches, cracks, or irregularities in thickness or width. This process ensures that the strips meet the required visual standards and specifications. In addition to visual inspection, non-destructive testing (NDT) techniques are frequently employed to detect internal defects that may not be visible to the naked eye. NDT methods can include magnetic particle inspection, ultrasonic testing, eddy current testing, and dye penetrant testing. These techniques allow inspectors to identify potential defects such as internal cracks, voids, or inclusions that could compromise the quality of the steel strips. Moreover, precision measurement tools are used to ensure the dimensional accuracy of the steel strips. This can involve the use of calipers, micrometers, or laser measurement devices to verify the strip's thickness, width, and length. Any deviation from the specified dimensions is considered a quality issue and requires further investigation. Furthermore, laboratory testing is often conducted to assess the mechanical properties of the steel strips. Tensile testing is commonly performed to determine the strip's strength, elongation, and yield point. Hardness testing is also carried out to evaluate the strip's resistance to indentation or deformation. These tests help to ensure that the steel strips possess the required mechanical properties for their intended applications. Overall, the inspection of steel strips for quality and defects is a multi-step process that combines visual examination, non-destructive testing, dimensional measurement, and laboratory analysis. By employing these techniques, manufacturers can guarantee that their steel strips meet the necessary quality standards and provide reliable and defect-free products to their customers.
- Q:Can steel strips be used in the renewable energy sector?
- Yes, steel strips can be used in the renewable energy sector. Steel strips are commonly used in the construction of wind turbines, solar panel frames, and other renewable energy infrastructure. They provide structural support, durability, and resistance to corrosion, making them an ideal choice for various applications in the renewable energy sector.
- Q:How are steel strips processed for heat dissipation?
- Steel strips are processed for heat dissipation through various methods such as heat treatment, surface coating, and the incorporation of cooling elements. These processes help enhance the steel's ability to absorb and dissipate heat, ensuring efficient heat management in applications such as electronic devices, automotive components, and heat exchangers.
- Q:How are steel strips used in the manufacturing of solar panels?
- Steel strips are used in the manufacturing of solar panels to provide structural support and stability, as they are strong and durable. These strips are typically used as frames or brackets to hold the various components of the solar panel in place, ensuring their proper alignment and protection.
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High grade hot rolled narrow strip steel
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 300 m.t.
- Supply Capability:
- 5000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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